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Finding the Fourth Proportional to 653.30, 980.96 and 530.38

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Solution

The fourth proportional to 653.30, 980.96 and 530.38 is: 796.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    653.30 : 980.96 = 530.38 : x
  2. Step 2: Convert to fraction form
    653.30/980.96 = 530.38/x
  3. Step 3: Cross multiply
    653.30x = 980.96 × 530.38
  4. Step 4: Simplify right side
    653.30x = 520,276.46
  5. Step 5: Solve for x
    x = 520,276.46/653.30
  6. Step 6: Final answer
    x = 796.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.